Hezekiah cook



H. COOK.

Grain Separator.

Patented Sept. 13, 1.870.

N. PETERS. Pmiolimgmpher. washingtnn. D. C.

HEZEKIAII 000K, OF .DILLSBURGn PENNSYLVANIA.

Letter-s Patent N o. 107,338, dated September 13., 1870.

IMPROVEMENT IN' GRAIN-SEPARATR.

The Schedule referred to nfthese Letters Patent and making part of thesame To all whom it may concern Be it known 'that I, HnzEKrAH COOK, ofDillsburg, in the county of York and State of Pennsylvania, haveinvented anew and useful Improvement inGrain- Separatore; and I dohereby declare the following to be a full, clear, and exact descriptionot' the same, reference being had to the accompanying drawingin which`Figure 1 is a perspective view of my invention.

Figure 2 is a vertical longitudinal section of the same.

AMy invention relates toy that class of separators known asfarming-mills, which is intended to separate t-hrashed' grain from thehusks, straw, and chaff;

and

It consists of a peculiar arrangement otscreens, Ste., in a vibratingshoe, to be placed inthe ordinary fanning-mill, whereby theseparatiou'is rendered almost or entirely perfect at one operation, sothat it is not necessary to repass the tailings'though the machine. Thatothers may 'fully understand myv invent-ion, I will'particularlydescribe it.

'lhe'shoe A is constructed and placed in the mill, in the same manner:1s-the ordinary shoe of a fanningmill. lt may also be vibrated bythe'same appliances, so that there will be no dilculty experienced inreplacing the ordinary shoe of Aany mill with one like my invention,hereindescribed.

Thesieves or. screens are, however, arranged inv a manner different fromany other mill with which Iam acquainted.

In the first place, instead of employing a single screen at the top ofthe shoe, and extending its whole length, I employ 'two short or halfscreens, B G, the latter slightly below the other, and with the edgeschamfered away, so as to vpermit the freest passage for air between theadjoining edges of said screens.

The blast comes into the shoe in the ordinarydirecticle-shown by arrows,and passes upward through the sieves B C, lifting thechal from thegrain.

As the Vgrain falls over the lower edge of the upper sieve, it isexposed to a direct and free blast, coming between the 'adjoining edgesof the screens, and said blast can, at that time, separate the chafffrein-the;

grain nuch more effectually than when' broken by passing through themeshes-ot' the screen. The chaff,l

-in short, is more electually loosened 'from the grain,

and more easily blown-over the tailof the-machine.

The grain which passes through the screeuilll` will be accompanied by asmall quantity ofdirtand cl'lal, and will be returned to the front endofthe screen E, by the return-board D.

vA slide, F, is placed below the screen E, to receive the grain as itpasses through said screen, and by'said` slide the grain is returned tothe long screen at the bottom ofthe machine, by means of which smallforl eign seeds are separated from the good grain;

The inclined guard-sereen G receives a portion of the grain which fallsthrough thenpper end of screen B, and causes it to pass down to thelower screen E. As;` shown in fig. 2, the screen E and slide-F are bothmade adjustable in their grooves, so as to secure the most eificientandsatisfactory action. s,

Having described my invention, What I claim as new is l. Thecombinationand arrangement of the half sieves B 0,' the guard-screen G,and the lower screen E, as described and shown, and for the purposesetforth. V2. The combination' and arrangement of -thehalf- .sieves B C,guard-screen G, return-board D, screen E,and-riddleboaid F, as describedand shown, and for the purpose set forth.

Witnesses:

. R. D. A0. SMITH,

J osEPH DEARDORFF.

HEZEKIAH coole

